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(No Model.)

I. C. N. SWEET.

LIFT PUMP.

,435. Patented Oct. 23, '1888.

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N PE1-sns. Phom-Lmmgmpum. wnsnmgm nc IRA C. N. SVVEEI, OF SANDVICH, ILLINOIS.

SPIFICATION forming pari; of Letters Patent No. 391,435, dated October 23, 1888.

Application filed May 5, 1888. Serial No. 272,938. (No model.)

To @ZZ whom it may concern.-

Be it known that I, IRA C. N. SWEET, a citi- `zen of the United States, residing at Sandwich, 1n the county of De Kalb and State of Illinois, have invented a new and useful Improvement in Lift-Pumps, of which the following is specication.

My invention relates to an improvement in lrft-pumps and attachments therefor whereby air may be forced into the water in the well or cistern for the purpose ot' aerating and purifylng the same; and my invention consists in the peculiar construction and combination of devices that will he more fully set forth here` inafter, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a perspective view of a pump embodying my improvements. Fig. 2 is a vertical sectional view of the same. Fig. 3 is a detailed enlarged vertical sectional view of the plunger. Fig. 4 is an enlarged horizontal sectional view taken on the line x :c of Fig. 2. Fig. 5 is a top plan view of the plunger.

A represents the pump-cylinder, which is of the usual construction, is provided near its u pper end with a disharge spout, B, and has an upwardly-opening checlcvalve, C, seated in its lower side, and provided on its upper side, at its center, with aweight, D, which weight has a curved arm, E, at oneside.

F represents the suctionpipe, which en tends downward into the well or cistern, and is connected to the inlet-opening G of the pumpcylinder by means of the usual sleeve-coup ling, H. At the upper end of the pump-cyl` inder is secured a cap, I, which is provided at one side with a vertical standard, K. Fulerumed between ears at the upper end of the said standard isa handle orlever, L, the shorter end of which is arranged over the center of the cylinder.

M represents the plunger, which comprises a pair of circular sections, N O, connected together by a screw-coupling, P. The section O is provided in its upper side with a series of radial ports, R, at the inner ends of which is a central boss, S. In the lower side of the section O, at the center thereof, is a circular countersunk recess, T, and arranged concentrically in the same and on a lower plane is a larger countersunk recess, II.

V represents a packing-ring, which bears against the lower side of the section and is turned upward against the outer side thereof, so as to encircle the said section.` W represents a similar packing-ring,which is arranged on an annular shoulder, X, with which the lower section, rN, is provided, the said packing-ring encircling the said lower section and having its upper edge turned inward over the shoulder X. An annular ring, Y. is interposed between the packing-rings V and NV, and when the lower section, N, is screwed to the said section O the said annular ring effects a perfectly air and water tight joint betweenthe said sections and secures thc packing-rings XV and V firmly to the plunger, as will be readily understood.

In the bottom of the lower section, N, is a circular opening, Z, and communicating with the said opening on the upper side of the bottom of said section is a countersunk annular recess, A'. Y

B' represents a hollow tubular rod, which connects the plunger tothe leverL and passes V upward and is adapted to work in a transverse slot, C', with which the cap I is pro vided. Near the upper end of the tubular piston-rod is a vertical slot, D'. Arranged in the said tubular rod is a valve-rod, E', which extends downward through the same and has its lower ends reduced to form the spindle F'. The said spindle projects into the recess or chamber G', formed between the sections N O of the plunger.

II represents the body of a vertically-movable puppet-valve, which body is adapted to operate in the opening Z ofthe lower portion ot' the plunger, and has a ilange, I', at its upper side, which is adapted to engage the countersunk recess A'. In the center of the body of the puppet-valve is a vertical opening or bore, K', which is open at its upper end and receives an enlarged head or collar, Il', formed with or secured to the lower end ot' the spin` die F'.

M' represents a disk ot' rubber, leather, or other suitable ilexible material, which is circular in shape, is fitted on the upper side of roo the body H', and is adapted to come in contact with the upper side of the bottom of the lower section, L', of the plunger, so as to effect an air-tight joint therewith when the puppet-valve is at the lower limit of its stroke, in the position indicated in solid lines in Fig. 3.

N represents a circular plate, which is arranged on the upper side of the disk M, has a central opening for the section of the spindle F', and is secured to the puppet -valve by means of screws O', thereby securing the disk M firmly on the puppet-valve. The said puppet-valve is adapted to play vertically on the spindle F', as will be readily understood by reference to Fig. 3.

P represents a setscrew which extends through the slot D' and engages the rod E', the function of the said set-screw being to secure the rod E' in the tube B when said rod is either in the lower position (shown in solid lines in Fig..2) or in the raiscd posit-ion. (Indicated in dotted lines in the said Fig. 2.) When .the said rod E' is lowered, the puppet-valve is adapted to close against the lower side of the plunger on the upstroke of the latter, and to open on the downstroke thereof; but when the said rod E' is raised the disk M is adapted to close against the lower sides of the ports R in the countersunk recess U on the downstroke of the plunger, and to open downward from the said ports on the upstroke of the plunger'.

R' represents a short horizontal shaft, which is swiveled in a transverse opening in one side of the pump-cylinder, near the lower end thereof, has a knob or handle, S', at its outer end, by means of which it may be turned, and has its inner cnd curved to form an arm, T. The said arm T is adapted to be turned so as to engage the arm E of the weight D, and thereby open the valve O, as indicated in dotted lines in Fig. 2.

The operation of my invention is as follows: When the pump is to be used for pumping water from the well or cistern, the rod E' is lowered in the hollow rod B', as shown in solid lines in Figs. 2 and 3, so as to adapt the puppet-valve body H' to operate in the opening in the bottom of the plunger, and the arm T' ofthe shaft R' is turned to a position out of contact with the arm E of valve C, as shown in Fig. 4C. When the pump-handle is operated, the plunger is caused to reciprocate vertically in the pump-cylinder A. On the upstroke of the plunger the puppetfvalve closes against the bottom thereof, and thereby a partial vacuum is formed in the lower portion of the pump-cylinder, which causes the valve C to open and water to rush upward through the suction-pipe F into the pump-cylinder, when the valve C thereupon closes, so as to retain the water in the pump-cylinder. On the ensuing downstroke of the plunger the puppetvalve rises, and the water in the pump-cylinder flows through the hollow plunger and through the ports R until the plunger reaches the bottom of the column of the water, and on the ensuing upstroke of the plunger the water body of water in the bottom of the well or eis-l tern, the rod F/ is raised in the rod B' and secured, as illustrated in dotted lines in Fig. 2,

thereby elevating. the puppet-valve, so that the diaphragm or valve M' is adapted to operate against the lower sides of the ports R. On each upstroke of the plunger the outer edge of the said puppetvalve M turns downward, so as to admit air through the ports R into the pump-cylinder, and on the ensuing downstroke of the plunger the air is forced through the pipe F into the body of water and rises through the same inthe form of bubbles, thereby thoroughly aerating the water and preventing stagnation thereof. It will be understood, of course, that when the disk M' 1s thus arranged to operate against the upper side of the plunger the shaft R' is turned so as to cause the arm T' to come in contact with the upper side of the arm E of valve C, so as to partly raise the said valve, and thus permit the free escape of the compressed air in the pump-cylinder through the suction-pipe F when the plunger descends.

Still another mode ofoperating the airpump attachment is to turn the shaft R so as to lnove the arm T' out of' engagement with the arm E and valve C. Vhen thus arranged, air is compressed in the pump-cylinder on each downstroke of the piston or plunger, and when the latter nears the lower limit of its stroke it engages the arm E, and thereby tilts or opens the valve C, so as to permit the escape of the compressed air from the pump cylinder through the suction-pipe F.

Another function of the operating-arm T is to raise the valve C, so as to permit the escape of water from pump-cylinder through the pipe F into the well or cistern, so as to prevent the water from freezing in the pump when the latter is not in use, and also to prevent the water from becoming warm and stagnant in the pump.

Particular stress is laid on the fact that I utilize the same pipes and plunger of the pump to force air into the well or cistern to aerate the same.- This is the main feature of my invention.

Having thus described my invention, I claim-- l. The combination,with the hollow plunger having the openings Z in its lower side and the ports R in its upper side, of the verticallymovable rod E', arranged in the plunger, the vertically-movable puppet-valve having its body H' guided on said rod, connected thereto, and vertically adjustable therewith, and the IOO flexible disk M' on said puppet-valve, for the purposes set forth, and means for securing the valve and its rod in position when elevated, substantially as described.

2. The combination, in a suction-pump, of the hollow plunger having the ports R in its upper side and the openings Z in its lower side, thehollow rod B,attached to the plunger for operating the same, the rod E', secured in the said rod B' and vertically adjustable therein, and means for securing the valve and its rod in position when elevated, the puppetvvalve H', having its body secured to and vertically movable on the lower end of rod E', and the disk M' on the upper side of valvebody H', substantially as described.

3. The combination,in asuction orlift pump, of the hollow plunger having the ports R in its upper side and the openings Z in its lower side, the hollow rod B', attached to said plunger and having the vertical slot D', the vertical rod E', arranged in the hollow rod B' and extending downward into the plunger, the puppet-valve having its body H' independently movable ou the lower end of said rod, the disk lv on the upper side of valve-body H', and the set-screw P, working in the slot D and engaging the rod E, for the purpose set forth, substantially as described.

et. The combination, in a pump, of the cylinder having the upwardly-opening valve in the lower side, provided with the arm E, and the vertically-movable plunger arranged in the cylinder, adapted to come in contact With the said arm on the downstroke of the plunger, and having the ports R and the verticallymovable valve in said plunger independently adjustable therein, and means for holding the valve raised to close the ports R, substantially as described.

5. The combination, in a pump, ofthe cylinder, the inlet-opening valve in the bottom thereof, having the arm E, the shaft R', journaled in the cylinder and having the arm T' to engage the arm E, for the purpose set iorth, and the hollow reciprocating plunger arranged in the pump-cylinder, the said plunger havlng the opening Z in its lower side and the ports R in its upper side, the vertically-movable valve arrangedin said plunger, the rod, toindependently adj ust the said valvein thesaid plunger, and means for holding the rod and its valve elevated, so as to cause'the valve to close the ports It, substantially as described. D

6. A compound plunger forming in combination an airforcing and a water-raising plunger, and consisting, essentially, of tw o elements;

Witnesses:

RS. MosHER.,

F. W. SLY. 

